js location.href 和 php header 跳转方式

if ($result){
    echo '添加成功';
//    header('refresh:3,url=user_nameList.php');
    echo "<script> alert('添加成功');location.href='user_nameList.php'</script>";
}else{
    echo '添加失败';
//    header('refresh:3,url=userName_insert.php');
    echo "<script>alert('添加失败');location.href='userName_insert.php'</script>";
}